Only limit is your imagination.
The CanaKit 32GB Raspberry Pi 3 Complete Starter Kit is down to $57.99 on Amazon. The kit normally sells for $75 and hasn’t dropped this low in almost a year. This is a one-day only sale as part of Amazon’s “12 Days of Deals” promotion.
You can also upgrade to the CanaKit Raspberry Pi 3 B Plus starter kit today. It’s on sale for $63.99 from a street price of $80. It has never gone on sale before.
The Raspberry Pi is an open platform computer that can be used for any number of things. Android Central has some of the more popular examples of things you can do, including setting it up for retro gaming or a smart camera.